20309+4913 S   755AB

 
 
20h 30m 52.72s +49 12' 47.5" P.A. 278 sep 59.9 mag 6.64,9.72 Sp A2 dist. 147.28 pc (480.43 l.y.)
 
 
Coord 2000
20309+4913
Discov num
S   755
Comp
AB
Coord arcsec 2000
20 30 52.72 +49 12 47.5
Date first
1825
Date last
2015
Obs
26
Pa first
279
Pa last
278
P.A. Now (θ)
278°
Sep first
61.4
Sep last
59.9
Sep. Now (ρ)
59.9"
Mag pri
6.64
Mag sec
9.72
delta mag (ΔM)
3.08
Spectral class
A2 (white)
Pri motion ra
+001
Sec motion ra
+003
Pri motion dec
-012
Sec motion dec
-016
Notes
N (See Notes)
rPM=0.275 (< 0.3, Physical double)
This double is physical.
 
 
20309+4913 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20309+4913 S 755 AB 1825 2015 26 278 59.9 6.64 9.72 3.08 <===
Show 20309+4913 ES 2695 AC 1909 2015 4 118 20.2 6.64 13.50 6.86
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
277.5
Precise sep
59.866
Constellation
Cygnus
SAO
49731
HIP
101206
Tycho2
3581-00823-1
Gaia DR2
03772460160
HD
195710
BD
BD+48 3148
Distance
147.28
Distance ly
480.43
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20309+4913 S 755 AB 2002 24 278 59.3 6.64 9.72 A2 N D 203052.72+491247.5
20309+4913 S 755 AB 2003 25 278 60.0 6.64 9.72 A2 N D 203052.72+491247.5
20309+4913 S 755 AB 2012 26 278 60.2 6.64 9.72 A2 N D 203052.72+491247.5
20309+4913 S 755 AB 2015 26 278 59.9 6.64 9.72 A2 N 203052.72+491247.5

If you need more information about this double, apply for a data request form to the WDS.